EP 0852652 B1 20041124 - METHOD FOR ISOLATING MULTI-LATERAL WELL COMPLETIONS WHILE MAINTAINING SELECTIVE DRAINHOLE RE-ENTRY ACCESS
Title (en)
METHOD FOR ISOLATING MULTI-LATERAL WELL COMPLETIONS WHILE MAINTAINING SELECTIVE DRAINHOLE RE-ENTRY ACCESS
Title (de)
VERFAHREN ZUM ISOLIEREN VON MEHRFACH LATERALEN BOHRLOCH-KOMPLETTIERUNGEN WÄHREND EIN WÄHLBARER WIEDER-EINTRITT GEWÄHRLEISTET WIRD
Title (fr)
PROCEDE PERMETTANT D'ISOLER LES COMPLETIONS D'UN PUITS COLLECTEUR TOUT EN MAINTENANT UN ACCES SELECTIF DE RENTREE DANS UN PUITS DE DRAINAGE
Publication
Application
Priority
- US 9615347 W 19960925
- US 53469595 A 19950927
Abstract (en)
[origin: WO9712112A1] In a cased wellbore (10) having one or more cased and cemented drainholes (24) extending therefrom such that the elliptical shaped opening (46) or junction of each drainhole (24) with the primary well (10) is sealed and cut flush with the inside of the primary well casing (18), an inventive method and system is disclosed for: (a) isolating each perforated and/or drainhole completion (108, 126) within the primary wellbore (10), (b) providing flow control means (162, 164) for each completion (108, 126) to permit selective testing, stimulation, production, or abandonment, and (c) facilitating selective re-entry into any cased drainhole (24) for conducting additional drilling, completion, or remedial work.
IPC 1-7
IPC 8 full level
E21B 7/06 (2006.01); E21B 7/08 (2006.01); E21B 23/03 (2006.01); E21B 29/06 (2006.01); E21B 41/00 (2006.01); E21B 43/14 (2006.01); E21B 47/00 (2012.01)
CPC (source: EP US)
E21B 7/061 (2013.01 - EP US); E21B 23/12 (2020.05 - EP US); E21B 29/06 (2013.01 - EP US); E21B 41/0035 (2013.01 - EP US); E21B 43/14 (2013.01 - EP US); E21B 47/002 (2020.05 - EP US)
Designated contracting state (EPC)
GB NL
DOCDB simple family (publication)
WO 9712112 A1 19970403; AU 7167096 A 19970417; EP 0852652 A1 19980715; EP 0852652 A4 20010404; EP 0852652 B1 20041124; NO 313968 B1 20030106; NO 981382 D0 19980326; NO 981382 L 19980527; US 5715891 A 19980210
DOCDB simple family (application)
US 9615347 W 19960925; AU 7167096 A 19960925; EP 96933127 A 19960925; NO 981382 A 19980326; US 53469595 A 19950927